Important: For Android Device Manager to work, Android Device Manager and location access must be turned on on your phone. They’re on by default so if you or someone else hasn’t touched these settings, they should be on. Also, your phone must be turned on and have an Internet connection.

If you think your phone is turned off or doesn’t have an Internet connection, you can still try to remotely lock, erase, or ring your phone. The next time your phone is online, these actions will take effect.